Solo Leveling is a world filled with monstrously powerful individuals outside Sung Jinwoo. With humanity being influenced by mana, they undergo awakenings that grant them increased strength, speed, agility, and special abilities. Individuals who undergo an awakening become hunters and explore the dungeons that pop up all over the world. Hunters fall into one of several categories of ranks, from E to S. While S-rank hunters are the crème of the crop, they are few and far between. A-rank hunters are much more available; however, the power gap is significant.